DEVELOPMENT OF THE SEALED ZINC-SILVER OXIDE SECONDARY BATTERY SYSTEM.
Abstract
The use of an unfiltered power supply for charging increased capacity in comparison with a straight D. C. charge, particularly at high charge rates. Evaluation cycle data are presented for 32 cells from a factorial experiment which evaluates 7 separators, 2 KOH concentrations, 4 concentrations of Teflon binder, 3 Zn/Ag ratios and the effect of a negative interseparator. Poor results were obtained with various PVA and Borden methyl cellulose separators, particularly in 26.5% KOH. Finally, the rate of oxygen recombination was lowered by increasing the Teflon content in the negative and by decreasing the Zn/Ag ratio. Evaluation cycles and an overcharge test were run on 16 cells designed to determine the effect of surfactant additions to the negative and the effect of zinc penetration resistant separators on cell performance. Preliminary results indicate no loss of capacity with these additions. Initial results with cells built with RAI2.2XH separator indicate good capacity and voltage. Oxygen recombination however, was low due to a lack of free space in the cell. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 31, 1965
- Accession Number
- AD0621583
Entities
People
- Martin Sulkes